Heating apparatus



Oct. 30, 1928. 1,689,937

J. H. SUTTER HEATING APPARATUS Filed Jan. 2'7, 1928 3 I /2\\ X I 8 INVENTOR BY MM Him.

f/Lli ATTORNEY Patented Oct. 30, 1928.

] mrsn i STATES,

"PATENT oFFIca- JOSIAH II. 8UTTER,OF W'ICHITA, KANSAS.

-KEAT1 NG APPARATUS.

A Application. filedi January 27,. 1828.. Serial N01. 248,9'0L 7 air from the stove into the room.

, A further objechof my-invention is to i provide a novel air heater, which is ad-apted for insertion through an opening in a stove or furnace, and which is provided with novel means for conveying air into the furnace or stove, out. of contact with the gaseous products of combustiontherein, heating the air so conveyed and discharging it. into the room. outside the stove or furnace.

Stillanother objectof my inventionis to provide a novel air heater which is simple, cheap, durable, not likely to; get out of order,

which is readily adaptedfor insertion into and removal from thetep openingin a stove or furnace, and which is eflicient in its operation. I

The novel features of my invention are hereinafter fully describedland claimed.

In the accompanying drawing, which illustrates the preferred an embodiment of my invention, I

Fig. 1 is a front elevation, partly broken away, showin a stove of the usual cannon type provider 1 with my improvement.

Fig. 2 is an enlarged, central, vertical sectional view of my improved air heater, partly broken away.

Fig. 3 is a section on the line 33 of Fig. 2.

Fig. t is a view, partly in vertical section, partly in elevation and partly broken away of the inner conductor and a portion of the bottom of the outer conductor attached thereto.

Similar reference characters designate similar parts in the different views.

My improved air heater comprises an outer conductor for air having a cylindrical upper portion 1 adapted for insertion through the top opening 2 of a stove 3, which may be of any usual type, the one shown belng an ordinary cannon heating stove. The portion 1 is provided 'with an annular peripheral groove 4 adapted to receive the stove top 5, such portion 1 being capable of being compressed so as to be passed through the opening 2, and having resiliency suflicient to cause it to spring out into engagement with the top 5 when the latter registers with the groove 4,. whereby the heateris' supported by the stovetop.

The: lower portion: of the outer conductoris, preferably, downwardly flaring, is designated by 6. The lower end. of theyflarmg portion 6 has fitted on-it alclaosedbottom plate 7 having an inturned annular-flange 8 embracing the outer side of the: flaring por- I tion,as shown inFig, 2.

The flaring portion 6 :has upper" cylindrical portion 9 adapted for removableinserti-on into the lower end of the upper portion 1.

Within and spaced at i'tsside walls from i the outer conductor is an inner conductor comprrslng a vertical cylindrical portion 10,

which extends upwardly in the outer condactor, and has an open upper:- end, which is, preferably, extended higher than the, upper end of the outer conductor, in order to effect a strong drafto t' air upwardly therethrough.

The lower portion 11 of the inn-er conductor is downwardly flaring;andrfastened at its lower end tothe bottom plate 7 in any suitable manner by riveting. The upper endof-theportion 11 iscylindrical and re f movabl-y titted,p:re-ferahly, in the lower end of the portion. a I a The flaring portion at its lower endis provided with peripheral intake openings 12, Fig. 4, which radially aline with Vertical plates 13, which are fastened at their lower ends to the" top of the bottom plate 7.

In assembling the heater in a stove, the portion 1 is inserted into the opening 2, so that the top 5 enters the groove 4.

The upper'end of the lower portion 6, with the plates 13 and portion 11 fastened thereto,

is inserted into the lower end of the portion 1, the said portion 6 and parts attached thereto being inserted into the stove through the door 7 1 1 of the stove. The portion 10 is then slipped into the portion 1 and fitted over the upper end of the portion 11.

When a fire is built in the stove the heat therefrom will heat the air in the lower end of the portions 11 and 6 and the heated air will rise in the inner conductor and will be discharged into the room. This will create a downward draft of colder air through the outer conductor, such colder air entering the upper end of the portion 1, passlng thence downwardlyto and through the intake open- I ings 12 and into the flaring portion 11 be- I10 tween the plates 13, where it will be heated e and will then pass upwardly out of the heater through the portion 10 into the room. In this manner the air in the room will be heated to a much greater extent and more quickly than could be done with the stove without the use of my heater, and without increasing the amount of fuel consumed.

The presence in the stove or furnace of my heater will not interfere in any manner with the feeding of fuel or the combustion thereof.

I do not limit my invention to the structure shown and described, as many modifications, within the scope of the appended claims, may be made without departing from the spirit of my invention.

lVhat I claim is 1.. In an air heater, two air conductors, one within the other and having its side walls spaced therefrom and having an open upper end and a downwardly flaring lower end having intake openings and resting against the bottom of the outer conductor, the latter having an open upper end and a closed flaring lower end adapted for insertion into a stove or furnace, and upwardly tapering radial plates extending from the bottom of the outer conductor into the flaring end oi the inner conductor.

2. In an air heater, two air conductors, one within the other and having its side walls spaced therefrom and having an open upper end and a downwardly flaring lower end rest ing on the bottom of the outer conductor and provided with peripheral intake openings, the outer conductor having an open upper end and a closed downwardly flaring lower end adapted to be inserted into a stove or furnace, and upwardly tapering radial plates extending from the bottom of the outer conductor into the flaring end of the inner conductor and respectively disposed at their outer edges ra lially with said openings.

In an air heater, two air conductors, one within the other and having its side walls spaced therefrom and having an open upper end and a downwardly flaring lower end resting on the bottom of the outer conductor and having peripheral intake openings, the inner conductor projecting higher than the outer conductor, the latter havin an open upper end and a closed downwardly flaring lower end adapted for insertion into a stove or furnace, and plates extending from the bottom of said outer conductor into the laring end of the inner conductor and radially alining respectively with said openings.

4. The combination with a stove having a top opei'iing, of two air conductors, one within the other and spaced at its side walls tl1erefrom, both conductors having open up per ends, the inner conductor extending higher than the outer conductor and having a downwardly flaring lower end resting on the bottom of the outer conductor and having pcripheral intake openings, the outer coiuluetor having a downwardly flaring lower closed end disposed in said stove, the outer eonductor er-ctending through said top opening, and plates extending from the bottom of said outer conductor into the flaring end of the inner conductor and radially alining respectively with said peripheral openings.

In testimony whereof I have signed my name to this specification.

JOSIAH H. SUTTER. 

